ARM mbed TLS before 2.12.0, before 2.7.5, and before 2.1.14 allows remote attackers to achieve partial plaintext recovery (for a CBC based ciphersuite) via a timing-based side-channel attack
Published Jul 28, 2018
5.9
MEDIUMCVSS 3.0
EPSS 2.77%
Description
ARM mbed TLS before 2.12.0, before 2.7.5, and before 2.1.14 allows remote attackers to achieve partial plaintext recovery (for a CBC based ciphersuite) via a timing-based side-channel attack. This vulnerability exists because of an incorrect fix (with a wrong SHA-384 calculation) for CVE-2013-0169.
Affected products
- Vendor n/a Product ARM mbed TLS before 2.12.0, before 2.7.5, and before 2.1.14 Defaultn/a
- Version ARM mbed TLS before 2.12.0, before 2.7.5, and before 2.1.14StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | ARM mbed TLS before 2.12.0, before 2.7.5, and before 2.1.14 | n/a |
|
Configuration 1
Configuration 2
- 8.0
- 9.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
AV:N/AC:M/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.77% (0.02771) | 85.82th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.31% (0.02307) | 81.04th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.65% (0.00652) | 68.50th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.89% (0.01894) | 72.21th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.65% (0.00652) | 69.18th | v4 (v2025.03.14) |
| Dec 17, 2024 | 0.26% (0.00255) | 64.50th | v3 (v2023.03.01) |
| Feb 21, 2024 | 0.36% (0.00362) | 71.60th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.28% (0.00280) | 67.49th | v3 (v2023.03.01) |
| Jan 28, 2024 | 0.28% (0.00280) | 65.12th | v3 (v2023.03.01) |
| Jul 22, 2023 | 0.39% (0.00393) | 69.88th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.44% (0.00439) | 70.80th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.31% (0.01306) | 31.19th | v1 |
| Jan 6, 2022 | 1.31% (0.01306) | 30.55th | v1 |
| Sep 1, 2021 | 1.31% (0.01306) | 69.61th | v1 |
| Apr 14, 2021 | 1.31% (0.01306) | 0.00th | v1 |
No CWE recorded.
References (4)
- https://lists.debian.org/debian-lts-announce/2018/09/msg00029.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-02 x_refsource_CONFIRMMitigationThird Party Advisory
- https://usn.ubuntu.com/4267-1/ vendor-advisoryx_refsource_UBUNTU
- https://www.debian.org/security/2018/dsa-4296 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://lists.debian.org/debian-lts-announce/2018/09/msg00029.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-02 | x_refsource_CONFIRMMitigationThird Party Advisory | |
| https://usn.ubuntu.com/4267-1/ | vendor-advisoryx_refsource_UBUNTU | |
| https://www.debian.org/security/2018/dsa-4296 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.